GCF of 2181/756, 1561/790
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 2181/756, 1561/790 i.e 1/298620 easily. The following is the detailed procedure to determine the greatest common factor of fractions 2181/756, 1561/790.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
What is the GCF of 2181/756,1561/790?
Given fractions are 2181/756,1561/790
To find the GCF of fractions, we have to find the GCF of numerator numbers and LCM of denominator numbers. Its formula is given by
GCF of Fraction = Greatest Common Factor of Numerator/Least Common Multiple of Denominators
In the fractions 2181/756,1561/790, numerators are 2181,1561
Denominators are 756,790
The GCF of 2181,1561 is 1 .
LCM of 756,790 is 298620.
The greatest common factor of 2181/756,1561/790 = [GCF of 2181,1561]/[LCM of 756,790]= 1/298620
Therefore, the GCF of 2181/756,1561/790 is 1/298620.
To find the highest common factor of 2181,1561, we have to find the factors of both numbers and list the highest common factor.
The factors of 2181 are 1, 3, 727, 2181
The factors of 1561 are 1, 7, 223, 1561
The HCF of 2181,1561 is 1.
Lets's calculate GCF of 2181,1561
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 2181,1561 By Matching Biggest Common Factor Method
Now, list down the factors of 2181
:1,3,727,2181
Now, list down the factors of 1561
:1,7,223,1561
Greatest Common Factor
We found the factors 2181,1561 . The biggest common factor number is the GCF number.
So the greatest common factor 2181,1561 is 1.
Lets's calculate LCM of 756,790
| 2 | 756, 790 |
| 378, 395 |
∴ So the LCM of the given numbers is 2 x 378 x 395 = 298620
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/298620
Therefore, the GCF of Fractions 2181/756,1561/790 is 1/298620
Least Common Multiple of 756,790 with GCF Formula
The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).
We need to calculate greatest common factor of 756,790 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(756,790) = 2
common factors(in case of two or more numbers have common factors) = 1
GCF(756,790) x common factors =2 x 1 = 2
LCM(756,790) = ( 756 × 790 ) / 2
LCM(756,790) = 597240 / 2
LCM(756,790) = 298620
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FAQs on GCF of Fractions of 2181/756, 1561/790
1. What is the HCF of 2181,1561?
The HCF of 2181,1561 is 1
2. What is the GCF of a fraction?
The GCF of a fraction is defined as the greatest fraction that divides exactly into 2 or more fractions.
3. How to find GCF in Fractions?
Answer: GCF of fractions can be found using the simple formula GCF of Fractions = GCF of Numerators/LCM of Denominators.
4. What is the GCF of Fractions for 2181/756, 1561/790?
Answer: GCF of Numerators as per given numbers 2181/756, 1561/790 is
GCF of Numerators i.e. for 2181,1561 is 1
LCM of denominators i.e. for 756,790 is 298620.
Thus, GCF of Fractions is 1/298620.Finally, GCF of Fractions for 2181/756, 1561/790 is 1/298620.